Method of packing food products.



P. W.`FLEISCHER. METHOD 0F PACKING F000 PRODUCTS. APPLICATION FILED AUG.2I, 1913.

Patentd July 3, 191?,

ffl/Quin? 'A I Wf'lewaff l2 i l 1,231,585 l visionally locked cover are subjected to the sists in forming on thebody thereof a flared sterilizing or processing heat; fifth, finally seaming flange which extends beyond the the filled can fully sterilized and its proend of the body and is adapted to be invisionally locked cover are vsealed together eluded in a double seam, forming a cover 5- by forming the provisional seam into the 'with a flange which extends inward so as 70 hermetic final seam illustratedin Fig. 5, to engage under a portion of the'flange of by the application of the ordinary doublethe bodywhen the latter has been brought seamingl rolls or operation. toward a horizontal position, placing such It sometimes happens that the packing cover on the body,bringing the flange of the l material is not sufficiently set toresist the body toward a horizontal position so that 75 scraping action of the flange a upon the it is given greater radial eXtensionand enunder surface of the cover flangeb. In such gages over 'a portion ofthe flange of the case the scraping action can be quite over cover to hold the cover non-hermetically to come by slightly rounding or curling the the body, and subsequently forming said upper edge of the outstanding can body .flanges intoa double seam. 80 flange a, as shown at a. The curvature 1l. The process of closing a can body need be so slight in actual practice that in which consists in providingl an upwardly its least form it could hardly be indicated vflaring flange on the can body, and a dein the drawing. pending curled flange about the cover, plac- Among other advantages'of the invention ing the curled flange of the cover over the 85 is that the pressing operation, which stretches flaring flange of the body, and exerting pres'- and expands the inclined flange radially and sure upon the cover to bring the flange of interlocks together the can body and cover the body to horizontal position with its edge non-hermetically, smooths out many bends, within the curled flange of the cover in nondents and malformations of the body flange, hermetic engagement.

often produced in handling, shipping and 5. The process of closing a can body otherwise, and brings the body and cover which consists in providing an upwardly flanges into very close and accurate conforflaring flange on the can body, and a deination before the double seaming; so that pending curled flange about the cover, placa perfect hermetic double seam results in ing the curled flange of the cover over the 95 cases where it would not be produced by the flaring flange of the body, exerting presusual methods; and this preliminary union sure upon the cover to bring the flange of of the body and cover is performed by a the body to horizontal position with its edges simple and direct die action without the within thecurled flangeof the cover in nonnecessity for any crimping mechanism or hermetic engagement therewith, and bend- 100 action thereof on the cover or' can. ing down the cover flange and' body flange I claim: to form a double seam. 1. The process of closing cans which con- 6. The method which consists in providsists in forming the body and cover elements ing `an upwardly flaring -flange on the body 40 thereof with seaming flanges, they flange of of a can, a depending curled flange on the 105 one element being inturned and the other cover adapted to fit over the-upwardly flarelernent being provided with a flared flange, ing flange on the body, positioning the cover then applying said cover on the end of theupon said body, exerting pressure upon the body, then bringing such inclined flange cover to bring the flaring flange of the body toward the horizontal so as to cause it to to horizontal position and interlocking non- 110 interlock with said inturned flange part to hermetic engagement with the curled flange hold the cover non-hermetically on the body, of the cover, and subsequently forming a and subsequently forming said flanges into ff double seam as an independent operation.

a double seam. A r 7. The method of closing cans to insure 2. The process of closing cans which conthe formation of an efficient tight double 115 sists in forming on the body thereof a seamseam, which consists in providing an uping flange which is inclined outwardly relawardly flaring flange. upon the body and a tive to the side wall of the body and is adaptdepending curled flange on the cover, poed to be included in a double seam, forming sitioning the cover upon the body and pressa cover with a flange which extends so as to ing upon the cover to remove any inaccu- 120 engage under a portion of the flange of the racies from the flaring flange and to bring it body when the latter has been brought to horizontal position with its edge in intertoward a horizontal position, placing such locked knon-hermetic relation with the curled cover on the body, bringing the flange of flange of the cover, and then rolling the-inthe body toward a horizontal position so terlocked flanges into a double seam. 1;.5 that it engages over a portion of the flange 8. A method of sealing sheet metal conof the cover to-hold the cover non-hermetitainers, which consists in forming the concally to the body, and subsequently forming tainer with a flange inclined from the horisaid flanges into a double seam. zontal and having an outwardly presented 3. The process of closing cans which conedge, forming the cover with a downward 130 Leonesa 'curl having an inwardly presented edge,

the edge to edge diameter of the container flange being nottgreater than the edge tov loosely to the said container that it interlocks positively with and above the flange of the cover but leaves space .for the exit from the lcontainer of gases and tainer bodyv and cover.,l

portions of its non-solid contents, and then subjecting the interlocked flanges to a doule seaming operation whereby the con--I tainer is hermetically sealed.

9. A method ofsealing sheet metal containers, which consists in forming the conone with an outwardly extending flaredl flange and the other with an inwardly extending dange, then,

l causing after filling the container, applying the: cover to the body so that the said flanges are presented toward each other, then compressing the cover and body together and the outwardly extending flange to be expanded by pressure and to interlock with the other flange without forming an airtight joint, and then, after processing, hermetically sealing the container.

10. A method of sealing sheet metal containers, whichconsists-in forming the concover one with an outwardly extending flared flange and the other with an inwardly extending flange, ing a packing liner between the cover and body, then, after filling the container, applying the cover to the body so that the said arplr ilanges are presented toward each other,

then compressing the cover and body togetherl and causing the outwardly extending flange to be expanded by pressure and to interlock with the other flange without forming an airtight joint, preventing the pressure and expansion of said Hange from injuring the said liner, and then, after processing, hermetically sealing the container.

11. A method of sealing sheet metal containers, which consists in forming the'con- `tainer body with an outwardly vextending :flared Hangs, forming the cover with an inwardly extending flange at the under side after filling the container, applying the cover to the body so that the said flanges are presented toward each other, then compressing the cover upon the body to cause the bodyange to be expanded by pressure and to lnterlock-abovethe cover flange without forming an air-tight joint,

and then, after processing, hermetically sealing the container.

12. A method of sealing sheet metal containers, which consists in forming the container body vwith an upwardly and outwardly extending dange, forming the cover with an inwardly extending flange at the under side of its rim, applying a packing liner between the cover and body, then, after lling the container, applying the cover to the body so that the said flanges are presented toward each other, then compressing the cover upon the body to cause the body forming an air-tight joint, preventing the pressure and expansion of the body flange from injuring the said liner, and then, after processing, hermetically sealing the container.

13. A method of sealing sheet metal containers, which consists in forming the container body with an upwardly and outwardly extending .scanning flange, forming the searning H ange of' the wardly extending dange at the under side of its rim, then, after filling the container, loosely applying the cover to the body so that the said danges are presented toward each other, then compressing the cover upon the body to cause the body flange tobe expanded by pressure and' to interlock above the cover flange without forming an airtight joint, and then, after processing, double searning and hermetically sealing the container.

1A. A method of sealing sheet metal containers, which consists'in forming the container body with an upwardly and outwardly extending searning flange having a smooth terminal portion, forming the cover wit an inwardly extending flange at the under side of its rim, applying a packing liner between the cover and body, then, after filling the container, loosely applying the cover to the body so that the said flanges are presented toward each other with the I,cover flange a little lower than the body flange, then compressingthe cover upon the body to cause the body flange toslide on said packing and to interlock above the cover flange without forming an air-tight joint,

and then, after processing, subjecting the interlocked flanges to' a 'hermeticl seaming operation.

cover with an in- 

